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Stock-Based Compensation
 9 Months Ended
Sep. 30, 2026
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation Stock-Based Compensation
A combined summary of activity in our active stock plans is presented in the following table. Performance stock units outstanding are presented based on the maximum payout rate specified by the applicable performance criteria. As of September 30, 2026, 2,114,785 shares remained available for future awards.
Deferred
Stock Units
Outstanding		Restricted
Stock Units
Outstanding		Performance
Stock Units
Outstanding
Number
of Units		Weighted-
Average
Fair Value
at Grant		Number
of Units		Weighted-
Average
Fair Value
at Grant		Number
of Units		Weighted-
Average
Fair Value
at Grant
Balance, January 1, 202661,539 $98.38 586,298 $111.39 219,512 $101.23 
Granted8,190 142.80 2,595 139.91 — — 
Vested(6,553)102.22 (2,298)126.25 (26,844)130.26 
Forfeited— — (8,839)112.61 (25,683)130.26 
Balance, September 30, 202663,176 103.74 577,756 111.62 166,985 91.11 
Shares issued in connection with stock compensation awards are issued from available treasury shares or, if treasury shares are unavailable, from authorized but unissued shares. Shares issued in connection with stock compensation awards and related information were as follows:
Three Months Ended
September 30,		Nine Months Ended
September 30,
2026202520262025
New shares issued from available authorized shares— — — — 
Shares issued from available treasury stock184 30,794 35,695 171,672 
Proceeds from stock option exercises$— $1,925 $— $7,881 
Stock-based compensation expense is recognized ratably over the requisite service period for all awards. The service period for restricted stock units does not extend beyond the date a participant reaches age 65. Deferred stock units granted to non-employee directors generally vest immediately, and the related expense is fully recognized on the date of grant. For performance stock units, the service period generally corresponds to the three-year performance period specified in the award but does not extend beyond the date a participant reaches age 65. Expense recognized each period is based on our estimate of the number of shares that will ultimately be issued based on the achievement of the applicable performance criteria.
Stock-based compensation expense or benefit and the related income tax benefit are presented in the following table. The service period for performance stock units granted each year begins on January 1 of the following year.
Three Months Ended
September 30,		Nine Months Ended
September 30,
2026202520262025
Restricted stock units$3,696 $3,139 $11,113 $10,357 
Deferred stock units— — 1,169 1,020 
Performance stock units1,926 1,131 3,924 1,806 
Total$5,622 $4,270 $16,206 $13,183 
Income tax benefit$737 $647 $2,939 $3,226 
Unrecognized stock-based compensation expense at September 30, 2026 is presented in the following table. Unrecognized stock-based compensation expense related to performance stock units is presented based on the maximum payout rate specified by the applicable performance criteria.
Restricted stock units$17,822 
Performance stock units5,989 
Total$23,811